Graco 3A2824B User Manual

Instructions - Parts

Viscon

3A2824B

Fluid Heater

For variable heating of fluids.

Not approved for use in explosive atmospheres or hazardous locations.

Model No. 16T525

1750 W; 7.3 A; 240VAC; 50/60Hz, 1 Phase

2000 psi (14 MPa, 138 bar) Maximum Working Pressure

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

TI19998a

9902471 Conforms to UL Std. 499 CSA Std. 22.2 No. 88

Contents

Warnings .................................3

Installation ................................ 5

TypicalInstallationDrawing ................ 5

Component Identification ....................6

General Information ......................7

SelectingTubing .........................7

Mounting Heater .........................8

Fluid Connections and Accessories ..........9

Electrical Connections ................... 10

Operation ................................11

Pressure Relief Procedure ................11

Initial Flushing .........................11

Priming System .........................11

Setting Heater Control ................... 12

Troubleshooting .........................13

Repair ................................... 13

Before Beginning Repair ..................13

Heater Temperature Controls .............. 14

Parts ....................................18

Accessories .............................. 19

TechnicalData ............................ 20

Schematic Diagram ...................... 20

Dimensions ............................ 21

Graco Standard Warranty ................... 22

GracoInformation ........................ 22

2 3A2824B

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING

ELECTRIC SHOCK HAZARD

This equipment must be grounded. Improper grounding, setup, or usage of the system can cause electric shock.

• Turn off and disconnect power cord before servicing equipment.

• Connect only to grounded electrical outlets.

• Use only 3-wire extension cords.

• Ensure ground prongs are intact on power and extension cords.

• Do not expose to rain. Store indoors

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns:

• Do not touch hot fluid or equipment.

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

• Do not spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

• Do not point gun at anyone or at any part of the body.

• Do not put your hand over the spray tip.

• Do not stop or deflect leaks with your hand, body, glove, or rag.

• Follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses and couplings daily. Replace worn or damaged parts immediately.

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they are antistatic or conductive.

• Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

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Warnings

WARNING

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.

• Read MSDSs to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

PERSONAL PROTECTIVE EQUIPMENT

Wear appropriate protective equipment when in the work area to help prevent serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not limited to:

• Protective eyewear, and hearing protection.

• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about your material, request MSDS from distributor or retailer.

• Do not leave the work area while equipment is energized or under pressure.

• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.

• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create safety hazards.

• Make sure all equipment is rated and approved for the environment in which you are using it.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

PRESSURIZED ALUMINUM PARTS HAZARD

Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or property damage.

• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents.

• Many other fluids may contain chemicals that can react with aluminum. Contact your material supplier for compatibility.

THERMAL EXPANSION HAZARD

Fluids subjected to heat in confined spaces, including hoses, can create a rapid rise in pressure due to the thermal expansion. Over-pressurization can result in equipment rupture and serious injury.

• Open a valve to relieve the fluid expansion during heating.

• Replace hoses proactively at regular intervals based on your operating conditions.

4 3A2824B

Installation

Typical Installation Drawing

The typical installation drawing is only a guide. Your Graco distributor can assist in designing your system.

Installation

EDCBA

ti19999a

Key:

A Bleed-type Master Air Valve B Air Filter C Air Regulator and Gauge D Air Line Lubricator E Pump Runaway Valve F Ground Wire G Pump K Heater

L Fluid Filter M Drain Valve N Fluid Pressure Regulator P Fluid Supply Line Q Spray Gun R Fluid Return Line S Back Pressure Valve T Fluid Shutoff Valve

U Director Valve V Drain Back Tube W Suction Tube X Pressure Relief Valve Y Whip End Hose Z Air Supply Line

FIG. 1: Typical Installation – Heated Circulating System

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Component Identification

Key:

AA Temperature control AB Heater light (illuminated while

heating) AC Heater inlet, 3/8 npt(f) AD Heater outlet, 1/4 npt(f)

FIG. 2: Typical Installation – Heated Circulating System

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AE Outlet thermometer AF Mounting bracket AG Heater plug AH Insulating washers

6 3A2824B

Component Identification

General Information

• Select system components that meet temperature and pressure ratings listed in Technical Data, page 20. The heater’s normal output range is adjustable from 84-180°F (29-82°C).

• To prevent fire and explosion, locate heater away from all flammable materials and where operators will not come in contact with hot metal surfaces.

• To avoid burns, insulate and/or label lines and components exiting heater that may become hot.

Heat Loss Curve: 70°F (21°C) Ambient

Selecting Tubing

Fluid loses some heat through the tubing or hose between the heater and spray gun. Locate heater close to the spray area to minimize heat loss through plumbing.

The chart in F mon types of tubing.

Chart Notes:

• Higher flow rates have less heat loss.

• Foam-insulated steel tubing and high pressure airless paint hose retain heat best. Insulated tubing and hose are more expensive, but higher costs are commonly offset by lower operating costs.

IG. 3 shows a heat loss curve for 3 com-

Typical Fluid Temperature Drop

FIG. 3: Typical Temperature Drop

(20 ft.) 6.1 m steel tube Fluid: (130° F) 54° C

(20 ft.) 6.1 m steel tube (3/8 in.) 9 mm foam insulation Fluid: (110° F) 43° C

(20 ft.) 6.1 m airless paint hose Fluid: (110° F) 43° C

Flow Rate

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